Here's another IP to toss on the barbie - 85.234.22.126

I got it too... Note the usernames... All A's and B's... they go in alphabetical order.

They've done this before and given up!

Is someone from vb.org going to control these attacks
To break into people's accounts ? Please add a block
Based on the IP addressed reported by members or invest into WAF to prevent this in
The future.

WTF ? this is not first time

Unfortunately short of disabling board emails there's nothing worthwhile to be done. There are hundreds, maybe thousands of IP addresses involved so banning individual ones is not feasible.

This usually lasts a couple days and then ends- in the mean time the easiest/best course of action is just to delete the emails.

Nor will it be the last time.

This happens every few months.
The software does what it is designed to do, it blocks them, and informs you.

Change your password if it worries you, otherwise just delete them.

If they aren't members, how are they getting our usernames?!

Just scraping them off the members list!

This sort of thing has been happening all the time on many sites and forum, so it was inevitable that it will happen here eventually. New Bots are being written to seek out lits of embers and then using brute force attacks to find weak passwords. This is why you always need to change your passwords.

I implemented a very simple, yet effective ways to fight these Bots. There are on the other hand a real person attack 'Hacker' which can visit your site. With some ISP providing proxy IPs and redirects, blocking IP number will be a total waste of time.

I can tell you that most of the attacks are coming out of Asia, Poland, Turkey, Federation, Germany, Ukrane, UK and yes USA. So if you block these IPs you also block possible effective members.

I too received the same notifications of attacks to my account, and when I read the IPs I just laughed. You see these all the time on my other sites, and they will tire and soon return as always. Scan you user database for weak passwords, notify the user to regularly change them. Most importantly, implement a simple and effect means to filter those Bots.

Sorry for this lengthy reply, but we do tend to panic over very simple and rectifiable problems.

Proverb: If your house has a door, expect some one to knock on it....